JPS60180770U

JPS60180770U - Internal combustion engine ignition timing control device

Info

Publication number: JPS60180770U
Application number: JP6703684U
Authority: JP
Inventors: 淳一横山
Original assignee: 日産自動車株式会社
Priority date: 1984-05-10
Filing date: 1984-05-10
Publication date: 1985-11-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の全体図で、冷間時のアイ
ドリング状態を示す図、第２図は同じく冷間時の低負荷
状態を示す図、第３図は同じく温間時の中負荷状態を示
す図、第４図は絞弁開度に対する吸入負圧及び制御負圧
の変化並びに、両ダイヤフラムのリフト変化を示す特性
図、第５図は機関吸入負圧に対する真空進角角度の変化
を示す特性図、第６図は他の実施例の全体図である。図面に現した符号の説明、１：ブレーカプレート、２：
ケース、４：真空進角装置、５：ロッド、６：第２ダイ
ヤフラム、７：第１ダイヤフラム、８：第２負圧室、９
：第１負圧室、１０：隔壁、１１：第１スプリング、１
２：第２スプリング、１３：ストッパ、１５：バイメタ
ル、１６：サーモバルブ（制御装置）。第６図ニー− １■■■□■□□町■■−１−■■■■■し１■■１■
■■■■■■■■■■■１■■■■−■■■■ト１　　
　　　の　　　　　　　ＩＩ　　　　　　　　　　　　
！Ｉｌｌ（ｍｍ）Ｌ−、Ｊ１゛１２４”’１Fig. 1 is an overall view of one embodiment of this invention, showing the idling state when cold, Fig. 2 also showing the low load state when cold, and Fig. 3 showing the same when warm. Figure 4 shows the change in suction negative pressure and control negative pressure with respect to the throttle valve opening, and a characteristic diagram showing the lift change of both diaphragms. Figure 5 shows the vacuum advance angle with respect to the engine suction negative pressure. FIG. 6 is an overall diagram of another embodiment. Explanation of symbols shown in the drawings: 1: Breaker plate, 2:
Case, 4: Vacuum advance device, 5: Rod, 6: Second diaphragm, 7: First diaphragm, 8: Second negative pressure chamber, 9
: first negative pressure chamber, 10: partition wall, 11: first spring, 1
2: Second spring, 13: Stopper, 15: Bimetal, 16: Thermovalve (control device). Figure 6 Knee-1 ■■■□■□□ Town ■■-1-■■■■■shi1■■1■
■■■■■■■■■■■1■■■■－■■■■To1
II
! Ill (mm) L-, J 1゛1 24”'1

Claims

[Scope of utility model registration request]

A first diaphragm and a second diaphragm are provided in the case of the vacuum advance device, and between the case and the first diaphragm,
A partition wall is provided between the two diaphragms to form a first negative pressure chamber and a second negative pressure chamber, and is fixed to the case and positioned between the two diaphragms. An ignition timing control device for an internal combustion engine, comprising a first spring and a second spring installed between diaphragms, a second diaphragm connected to a breaker plate, and a control device for controlling the pressure in a first negative pressure chamber.